Editing a farm operation before billing

I am on V 2015.06.00.47.Just an FYI:I had a couple instances this year that when editing a farm operation before billing then it didn't pull up the correct supplies when billing the Landlord.The best I could tell is this:I would do a farming operation that included supplies.I would then determine that one of my farms did not get the correct amount of chemical applied so I would edit the farming operation.When invoicing, I would select the landlord button, however, it would only pull up one of the supplies, even though there were multiple supplies associated with that farming operation.Thanks!